On Sale Add to Cart 10" High Flow Replacement Muffler Fuel Saver GrandRock MSRP: $559.38 Now: $492.25 Was: 10" High Flow Replacement Muffler Fuel Saver *Please Verify The Dimensions Of The Muffler To Ensure Fitment High Flow Replacement Muffler Studies Have Shown A Minimum Of 3% Increase In Gas Mileage Replaces 10" Diameter Stock Mufflers Works On All... MSRP: $559.38 Now: $492.25 Was: Add to Cart